Bulletin No. SUB-C Drawing No. LP0045 Released 8/02 Tel +1 (717) 767-6511 Fax +1 (717) 764-0839 www.redlion-controls.com SUB-CUB 1 & 2 - COMPLETE 6-DIGIT COMPONENT COUNTERS - LSI COUNTER CHIP WITH LCD DISPLAY APPLICATIONS INCLUDE: - SNAP MOUNTS DIRECTLY ON P.C. BOARD ! VENDING MACHINES ! AVAILABLE IN TWO SIZES ! VIDEO GAMES SUB-CUB 1 - 0.2" (5 mm) HIGH DISPLAY ! COMPUTERS *SUB-CUB 2 - 0.35" (8.9 mm) HIGH DISPLAY ! UTILITY METERS ! SOLDERLESS, ELASTOMERIC INTERCONNECTS ! OFFICE COPIERS ! ULTRA-LOW POWER, 5 V AT 15 µA TYPICAL ! P.C.’S ! ! LATCHABLE DISPLAY WITH LEADING ZERO BLANKING FLOW METERS ! ! TEST EQUIPMENT COUNT RATES TO 500 KHz ! DISPENSING EQUIP. ! IDEAL IN APPLICATIONS FOR: ! MACHINE CONTROLS REGISTER, STATUS & USAGE COUNTING FREQUENCY, EPUT, & RPM INDICATION ! MEDICAL EQUIPMENT TIMER, PULSE-WIDTH & PERIOD READOUT ! PORTABLE INSTRUMENTS * ACCESSORY HARDWARE AVAILABLE FOR PANEL MOUNTING SUB-CUB 2 DESCRIPTION As a completely self-contained counter/display module, SUB-CUBs can be maintenance, diagnostic, tune-up, or other data readout requirements. The treated as a component just like any other I.C. The modules contain a custom SUB-CUB 2, with its larger display, can also be mounted with a convenient monolythic counter/driver chip that performs all the counting functions together bezel kit to provide a very flexible and econmical panel instrument. with a 6-digit LCD readout. The latchable display with the separate reset SUB-CUBs snap-mount directly on any 1/16" P.C. Board that has been function permits these modules to be used as frequency or rate meters, timers, etched to provide a mating interconnect pad pattern with two mounting holes phase-angle or pulse width indicators and for other complex readout and a polarizing “key” hole. Interconnections to the P.C. Board as well as requirements in addition to simple high speed counting. internal connections are made with elastomeric connectors that provide These modules are ideal for internal “on-board” applications where a corrosion-proof, gas tight, interface contacts for high reliability. readout of count, frequency, time, etc. is needed within a circuit enclosure for MOUNTING & DIMENSIONS DIMENSIONS Snap in mounting on the P.C. Board is facilitated by two, split, lock-ramp In Inches (mm) pins which engage mounting holes drilled in the P.C. Board. The silicone rubber elastomeric connectors compress to accommodate P.C. Board thickness variation of ±0.005" (0.13 mm). P.C. BOARD LAYOUT P.C. Board pads may be gold or tin-lead plated. Pad surface must be flat Note: All hole size tolerances ±0.003" (0.08 mm) without excessive tin-lead build-up. (Layout views are from SUB-CUB-D All other tolerances ±0.005" (0.13 mm) mounting side of board.) 1 BLOCK DIAGRAM DEVICE CONNECTIONS * COUNT (C) - CMOS, Schmidt Trigger; counter increments on negative going transition. RESET (R) - CMOS Schmidt Trigger; counter is reset to zero when input is low. Counter should always be reset to zero whenever power is first applied to the unit. LATCH (L) - CMOS level-sensitive, asynchronous input. When pulled low, the latches are transparent and display is updated as new counts are received. When latch input is pulled high, the display registers count existing immediately prior to activating the latch. TEST (T) - CMOS level-sensitive input. When this input is high, counter operates normally. When pulled low, carry input to each decade is disconnected and tied to count input so all decades count in parallel to provide rapid testing. This input should be tied high if not used, or driven from an active output that will hold it high. For normal test routine, pull test and reset low, apply one count pulse and then allow reset to return high. Then apply count pulses so all digits increment together from zero. OSC. - This input provides for connection of an external 2.4 Meg. resistor required by the on-board scan oscillator. Oscillator runs at 240 Hz ±35% and has internal divider to provide 60 Hz back plane drive. V - +3 or +5 VD.C. Supply. DD V - Common for D.C. Supply and Inputs. SS * All unused inputs must be tied to either V or V , whichever is appropriate. DD SS CAUTION MAXIMUM RATINGS (VOLTAGE REF. TO V ) This device contains CMOS circuitry which requires special anti-static SS handling to the same degree required by standard CMOS integrated RATING SYMBOL VALUE UNIT circuits. Units should be stored in the conductive packaging used to ship the V DC Supply Voltage DD -0.5 to +6.5 VDC devices. Containers should be opened and units handled only on a V Input Voltage, All Inputs -0.5 to (VDD +0.5) VDC I conductive table top by personnel wearing wrist-strap grounding T Operating Temperature -35 to +85 °C A equipment. These devices have the same protection circuits as standard T Storage Temperature -35 to +85 °C STG CMOS devices to prevent damage to inputs due to nominal over-voltage. ELECTRICAL CHARACTERISTICS V = 5 V ±10% UNLESS OTHERWISE SPECIFIED DD SYMBOL PARAMETER MIN. TYP. MAX UNIT TEST CONDITION V Supply Voltage 2.5 6.0 VDC DD I Supply Current 15 22 µA 10 KHz Count Rate DD IDDQ Quiescent Current 6 12 µA Not Counting V Input High Voltage 3.9 3.0 VDC IH V Input Low Voltage 0.9 0.5 IL I Input Leakage Current 0.01 0.1 µA V ≥ V ≥ V IL VDD IN SS Count Frequency 500 KHz V = +5 VDC DD fc max (50% Duty Cycle) 250 KHz V = +3 VDC DD fosc Oscillator Frequency 240 Hz R EXT = 2.4 M ±10% T Reset Pulse Width 10 µS RST 2 TYPICAL APPLICATIONS COUNT & CONTROL FROM REMOTE INPUTS Inputs to SUB-CUBs are CMOS inputs and must be adequately buffered if remote “off-board” signal sources are used. This illustration shows a SUB- CUB being used in an elementary counting application to depict some of the buffering methods that can be used. The Count Input is buffered by the NPN Transistor input circuit. The base resistance is split into two 10 K resistors, with a filter cap to eliminate spurious counts due to electrical interference pickup. The filter network will allow count rates to 10 KHz with Symetrical +5 V input count pulses. The 4.7 K across the input would not be required if the circuit supplying the count pulses has a low off-state output impedance. The Remote Button-actuated Reset input is buffered by a simple RC circuit consisting of two 47 K resistors and a 0.01 mfd capacitor. The Test input is pulled low by the NPN Transistor in the test mode. The Test input can also be driven by an active output from a logic gate. If not used it should be tied to V DD to avoid any possibility of spurious interference. FREQUENCY, SPEED, FLOW, SPEED-RATIO, PERIOD & CYCLE TIME INDICATIONS This circuit uses a dual monostable I.C. to generate the proper latch and reset coordination required for frequency or time-period readouts. When frequency readout is desired, the pulse train whose frequency is to be displayed, is applied to the CLK-A input, (the inverter, in the CLK-A input, causes the SUB-CUB to increment on the positive going edge of CLK-A pulses and can be onitted if negative edge incrementing is satisfactory). The CLK-B input is supplied with standard time-base pulses whose period determines the measuring time. For frequency measurement, this time is 1 second so CLK-B input would be supplied with 1 pulse/sec. from a crystal clock or line-reference divider. At the positive going edge of each CLK-B pulse, the first monostable opens the SUB-CUB latch momentarily to update the display to the count existing at that instant of time. Immediately after the latch closes, freezing the updated count on the display, the internal counter in the SUB-CUB display is reset to zero in preparation for a new counting cycle. Thus, at the end of each measuring time interval the SUB-CUB display is updated to readout the number of pulses received during the period, while it is accumulating new counts for the next update. Frequency ratio can be displayed by replacing the standard time-base (CLK- B) input with a pulse train related to the second variable (or denominator) of the ratio. Normally this pulse train is divided by 10, 100, or 1000 before being applied to the CLK-B input to provide a higher resolution reading. For period or cycle-time indication, CLK-A and B inputs are simply interchanged. CLK-A input is now supplied with standard Clock Pulses, say 1000 Hz to readout in milliseconds, while the pulse train whose period is being measured is applied to the CLK-B input. PULSE WIDTH OR DWELL-TIME READOUT This circuit also uses two monostables, however for pulse-width readout they function at two different times. A train of standard clock pulses, whose period determines the readout increments, is applied to the CLK-A input. For example if readout in milliseconds is desired, CLK-A would receive 1 pulse/millisecond, or 1000 Hz The pulse whose width is to be measured is applied to CLK-B input. At the positive going edge of the CLK-B pulse, the first monostable momentarily resets the SUB-CUB internal counter to zero, and it then begins accumulating counts from the CLK-A time reference pulses. At the conclusion of the CLK-B pulse, the negative going edge momentarily opens the SUB-CUB display latch, and the number of time-reference pulses that have been counted, since reset, is latched on the display to provide a direct readout of CLK-B pulse-width. 3 PANEL BEZEL KIT FOR THE SUB-CUB 2 (P/N HWK40000) This kit provides a convenient way to adapt the SUB-CUB 2 to panel mounting. The kit includes the black plastic bezel, the panel and internal window gaskets, P.C. Board, 12" ribbon cable and mounting screws. ASSEMBLY DIMENSIONS & PANEL CUT-OUT In inches (mm) PANEL CUT-OUT FRONT VIEW COMPLETE FUNCTION EVALUATION KIT This convenient kit allows either the SUB-CUB 1 or SUB-CUB 2 to be run pushbutton operated. The SUB-CUB mounting board unplugs and can be used in all operating modes for experimental and evaluation purposes. The kit for bread board work (SUB-CUB Mounting Board is also available separately). includes an “on-board” 4.5 V battery and a variable frequency oscillator to The kit is supplied complete with batteries, but less SUB-CUB Display Counter supply a train of count pulses. LATCH, RESET, and TEST functions are Module (See ordering information below). SEPARATE SUB-CUB MOUNTING BOARD P/N DMOSCB02 COMPLETE EVALUATION KIT P/N DMOSCB01 ORDERING INFORMATION MODEL NO. DESCRIPTION PART NUMBER SCUB1 SUB-CUB 1 Display/Counter Module SCUB1000 SCUB2 SUB-CUB 2 Display/Counter Module SCUB2000 HWK 4 *SUB-CUB 2 Panel Bezel Kit with P.C. Board & Cable HWK40000 HWK 3 *SUB-CUB 2 Panel Bezel Kit w/o P.C. Board & Cable HWK30000 Complete Evaluation Kit With Batteries DMOSCB01 SUB-CUB Mounting P.C. Board DMOSCB02 * SUB-CUB Evaluation Kits Do Not Include SUB-CUB Dislay/Counter Module. Order SUB-CUB 1 or 2 Module Separately.